fix(wdt): changed ESP32-C3 WDT to use XTAL as clock

This clock is unchanged even when CPU/APB frequency changes (e.g. due to esp_pm),
which means timeout period is correct even after such a change.

components/soc/esp32c2/include/soc/Kconfig.soc_caps.in

@@ -511,6 +511,10 @@ config SOC_TIMER_GROUP_TOTAL_TIMERS
     int
     default 1
 
+config SOC_MWDT_SUPPORT_XTAL
+    bool
+    default y
+
 config SOC_EFUSE_DIS_DOWNLOAD_ICACHE
     bool
     default y

components/soc/esp32c2/include/soc/soc_caps.h

@@ -246,6 +246,9 @@
 #define SOC_TIMER_GROUP_SUPPORT_XTAL      (1)
 #define SOC_TIMER_GROUP_TOTAL_TIMERS      (1U)
 
+/*--------------------------- WATCHDOG CAPS ---------------------------------------*/
+#define SOC_MWDT_SUPPORT_XTAL              (1)
+
 /*-------------------------- eFuse CAPS----------------------------*/
 #define SOC_EFUSE_DIS_DOWNLOAD_ICACHE 1
 #define SOC_EFUSE_DIS_PAD_JTAG 1